mcs/class/System.Security/Test/System.Security.Cryptography.Xml/XmlDsigC14NTransformTest.cs

   1 //
   2 // XmlDsigC14NTransformTest.cs - NUnit Test Cases for XmlDsigC14NTransform
   3 //
   4 // Author:
   5 //      Sebastien Pouliot <sebastien@ximian.com>
   6 //      Aleksey Sanin (aleksey@aleksey.com)
   7 //
   8 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   9 // (C) 2003 Aleksey Sanin (aleksey@aleksey.com)
  10 // (C) 2004 Novell (http://www.novell.com)
  11 //
  12
  13 using System;
  14 using System.IO;
  15 using System.Security.Cryptography.Xml;
  16 using System.Text;
  17 using System.Xml;
  18
  19 using NUnit.Framework;
  20
  21 namespace MonoTests.System.Security.Cryptography.Xml {
  22
  23         // Note: GetInnerXml is protected in XmlDsigC14NTransform making it
  24         // difficult to test properly. This class "open it up" :-)
  25         public class UnprotectedXmlDsigC14NTransform : XmlDsigC14NTransform {
  26                 public UnprotectedXmlDsigC14NTransform ()
  27                 {
  28                 }
  29
  30                 public UnprotectedXmlDsigC14NTransform (bool includeComments)
  31                         : base (includeComments)
  32                 {
  33                 }
  34
  35                 public XmlNodeList UnprotectedGetInnerXml () {
  36                         return base.GetInnerXml ();
  37                 }
  38         }
  39
  40         [TestFixture]
  41         public class XmlDsigC14NTransformTest : Assertion {
  42
  43                 protected UnprotectedXmlDsigC14NTransform transform;
  44
  45                 [SetUp]
  46                 protected void SetUp ()
  47                 {
  48                         transform = new UnprotectedXmlDsigC14NTransform ();
  49                 }
  50
  51                 [TearDown]
  52                 protected void CleanUp ()
  53                 {
  54                         try {
  55                                 if (File.Exists ("doc.dtd"))
  56                                         File.Delete ("doc.dtd");
  57                                 if (File.Exists ("world.txt"))
  58                                         File.Delete ("world.txt");
  59                         }
  60                         catch {}
  61                 }
  62
  63                 [Test] // ctor ()
  64                 public void Constructor1 ()
  65                 {
  66                         AssertEquals ("Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315", transform.Algorithm);
  67                         CheckProperties (transform);
  68                 }
  69
  70                 [Test] // ctor (Boolean)
  71                 public void Constructor2 ()
  72                 {
  73                         transform = new UnprotectedXmlDsigC14NTransform (true);
  74                         AssertEquals ("Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments", transform.Algorithm);
  75                         CheckProperties (transform);
  76
  77                         transform = new UnprotectedXmlDsigC14NTransform (false);
  78                         AssertEquals ("Algorithm", "http://www.w3.org/TR/2001/REC-xml-c14n-20010315", transform.Algorithm);
  79                         CheckProperties (transform);
  80                 }
  81
  82                 void CheckProperties (XmlDsigC14NTransform transform)
  83                 {
  84                         Type[] input = transform.InputTypes;
  85                         Assert ("Input #", (input.Length == 3));
  86                         // check presence of every supported input types
  87                         bool istream = false;
  88                         bool ixmldoc = false;
  89                         bool ixmlnl = false;
  90                         foreach (Type t in input) {
  91                                 if (t.ToString () == "System.IO.Stream")
  92                                         istream = true;
  93                                 if (t.ToString () == "System.Xml.XmlDocument")
  94                                         ixmldoc = true;
  95                                 if (t.ToString () == "System.Xml.XmlNodeList")
  96                                         ixmlnl = true;
  97                         }
  98                         Assert ("Input Stream", istream);
  99                         Assert ("Input XmlDocument", ixmldoc);
 100                         Assert ("Input XmlNodeList", ixmlnl);
 101
 102                         Type[] output = transform.OutputTypes;
 103                         Assert ("Output #", (output.Length == 1));
 104                         // check presence of every supported output types
 105                         bool ostream = false;
 106                         foreach (Type t in output) {
 107                                 if (t.ToString () == "System.IO.Stream")
 108                                         ostream = true;
 109                         }
 110                         Assert ("Output Stream", ostream);
 111                 }
 112
 113                 [Test]
 114                 public void GetInnerXml ()
 115                 {
 116                         XmlNodeList xnl = transform.UnprotectedGetInnerXml ();
 117                         AssertNull ("Default InnerXml", xnl);
 118                 }
 119
 120                 private string Stream2String (Stream s)
 121                 {
 122                         StringBuilder sb = new StringBuilder ();
 123                         int b = s.ReadByte ();
 124                         while (b != -1) {
 125                                 sb.Append (Convert.ToChar (b));
 126                                 b = s.ReadByte ();
 127                         }
 128                         return sb.ToString ();
 129                 }
 130
 131                 static string xml = "<Test  attrib='at ' xmlns=\"http://www.go-mono.com/\" > \r\n &#xD; <Toto/> text &amp; </Test   >";
 132                 // BAD for XmlDocument input (framework 1.0 result)
 133                 static string c14xml1 = "<Test xmlns=\"http://www.go-mono.com/\" attrib=\"at \"> \r\n \r <Toto></Toto> text &amp; </Test>";
 134                 // GOOD for Stream input
 135                 static string c14xml2 = "<Test xmlns=\"http://www.go-mono.com/\" attrib=\"at \"> \n &#xD; <Toto></Toto> text &amp; </Test>";
 136                 // GOOD for XmlDocument input. The difference is because once
 137                 // xml string is loaded to XmlDocument, there is no difference
 138                 // between \r and &#xD;, so every \r must be handled as &#xD;.
 139                 static string c14xml3 = "<Test xmlns=\"http://www.go-mono.com/\" attrib=\"at \"> &#xD;\n &#xD; <Toto></Toto> text &amp; </Test>";
 140
 141                 private XmlDocument GetDoc ()
 142                 {
 143                         XmlDocument doc = new XmlDocument ();
 144                         doc.PreserveWhitespace = true;
 145                         doc.LoadXml (xml);
 146                         return doc;
 147                 }
 148
 149                 [Test]
 150                 public void LoadInputAsXmlDocument ()
 151                 {
 152                         XmlDocument doc = GetDoc ();
 153                         transform.LoadInput (doc);
 154                         Stream s = (Stream) transform.GetOutput ();
 155                         string output = Stream2String (s);
 156 #if NET_1_1
 157                         AssertEquals("XmlDocument", c14xml3, output);
 158 #else
 159                         // .NET 1.0 keeps the \r\n (0x0D, 0x0A) - bug
 160                         AssertEquals("XmlDocument", c14xml1, output);
 161 #endif
 162                 }
 163
 164                 [Test]
 165 #if NET_2_0
 166                 [Category ("NotDotNet")]
 167                 // see LoadInputAsXmlNodeList2 description
 168 #endif
 169                 public void LoadInputAsXmlNodeList ()
 170                 {
 171                         XmlDocument doc = GetDoc ();
 172                         // Argument list just contains element Test.
 173                         transform.LoadInput (doc.ChildNodes);
 174                         Stream s = (Stream) transform.GetOutput ();
 175                         string output = Stream2String (s);
 176                         AssertEquals ("XmlChildNodes", "<Test></Test>", output);
 177                 }
 178
 179                 [Test]
 180                 [Category ("NotDotNet")]
 181                 // MS has a bug that those namespace declaration nodes in
 182                 // the node-set are written to output. Related spec section is:
 183                 // http://www.w3.org/TR/2001/REC-xml-c14n-20010315#ProcessingModel
 184                 public void LoadInputAsXmlNodeList2 ()
 185                 {
 186                         XmlDocument doc = GetDoc ();
 187                         transform.LoadInput (doc.SelectNodes ("//*"));
 188                         Stream s = (Stream) transform.GetOutput ();
 189                         string output = Stream2String (s);
 190                         string expected = @"<Test><Toto></Toto></Test>";
 191                         AssertEquals ("XmlChildNodes", expected, output);
 192                 }
 193
 194                 [Test]
 195                 public void LoadInputAsStream ()
 196                 {
 197                         MemoryStream ms = new MemoryStream ();
 198                         byte[] x = Encoding.ASCII.GetBytes (xml);
 199                         ms.Write (x, 0, x.Length);
 200                         ms.Position = 0;
 201                         transform.LoadInput (ms);
 202                         Stream s = (Stream) transform.GetOutput ();
 203                         string output = Stream2String (s);
 204                         AssertEquals ("MemoryStream", c14xml2, output);
 205                 }
 206
 207                 [Test]
 208 #if NET_2_0
 209                 [ExpectedException (typeof (ArgumentException))]
 210 #else
 211                 // LAMESPEC: input MUST be one of InputType - but no exception is thrown (not documented)
 212 #endif
 213                 public void LoadInputWithUnsupportedType ()
 214                 {
 215                         byte[] bad = { 0xBA, 0xD };
 216                         transform.LoadInput (bad);
 217                 }
 218
 219                 [Test]
 220                 [ExpectedException (typeof (ArgumentException))]
 221                 public void UnsupportedOutput ()
 222                 {
 223                         XmlDocument doc = new XmlDocument();
 224                         object o = transform.GetOutput (doc.GetType ());
 225                 }
 226
 227                 [Test]
 228                 public void C14NSpecExample1 ()
 229                 {
 230                         using (StreamWriter sw = new StreamWriter ("doc.dtd", false, Encoding.ASCII)) {
 231                                 sw.Write ("<!-- presence, not content, required -->");
 232                                 sw.Close ();
 233                         }
 234                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample1Input);
 235                         AssertEquals ("Example 1 from c14n spec - PIs, Comments, and Outside of Document Element (without comments)",
 236                                         C14NSpecExample1Output, res);
 237                 }
 238
 239                 [Test]
 240                 public void C14NSpecExample2 ()
 241                 {
 242                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample2Input);
 243                         AssertEquals ("Example 2 from c14n spec - Whitespace in Document Content (without comments)",
 244                                         C14NSpecExample2Output, res);
 245                 }
 246
 247                 [Test]
 248                 public void C14NSpecExample3 ()
 249                 {
 250                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample3Input);
 251                         AssertEquals ("Example 3 from c14n spec - Start and End Tags (without comments)",
 252                                         C14NSpecExample3Output, res);
 253                 }
 254
 255                 [Test]
 256 //              [Ignore ("This test should be fine, but it does not pass under MS.NET")]
 257                 public void C14NSpecExample4 ()
 258                 {
 259                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample4Input);
 260                         AssertEquals ("Example 4 from c14n spec - Character Modifications and Character References (without comments)",
 261                                         C14NSpecExample4Output, res);
 262                 }
 263
 264                 [Test]
 265                 public void C14NSpecExample5 ()
 266                 {
 267                         using (StreamWriter sw = new StreamWriter ("world.txt", false, Encoding.ASCII)) {
 268                                 sw.Write ("world");
 269                                 sw.Close ();
 270                         }
 271                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample5Input);
 272                         AssertEquals ("Example 5 from c14n spec - Entity References (without comments)",
 273                                         C14NSpecExample5Output, res);
 274                 }
 275
 276                 [Test]
 277                 public void C14NSpecExample6 ()
 278                 {
 279                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample6Input);
 280                         AssertEquals ("Example 6 from c14n spec - UTF-8 Encoding (without comments)",
 281                                         C14NSpecExample6Output, res);
 282                 }
 283
 284                 private string ExecuteXmlDSigC14NTransform (string InputXml)
 285                 {
 286                         XmlDocument doc = new XmlDocument ();
 287                         doc.PreserveWhitespace = true;
 288                         doc.LoadXml (InputXml);
 289
 290                         // Testing default attribute support with
 291                         // vreader.ValidationType = ValidationType.None.
 292                         //
 293                         UTF8Encoding utf8 = new UTF8Encoding ();
 294                         byte[] data = utf8.GetBytes (InputXml.ToString ());
 295                         Stream stream = new MemoryStream (data);
 296                         XmlTextReader reader = new XmlTextReader (stream);
 297                         XmlValidatingReader vreader = new XmlValidatingReader (reader);
 298                         vreader.ValidationType = ValidationType.None;
 299                         vreader.EntityHandling = EntityHandling.ExpandCharEntities;
 300                         doc.Load (vreader);
 301
 302                         transform.LoadInput (doc);
 303                         return Stream2String ((Stream)transform.GetOutput ());
 304                 }
 305
 306                 //
 307                 // Example 1 from C14N spec - PIs, Comments, and Outside of Document Element:
 308                 // http://www.w3.org/TR/xml-c14n#Example-OutsideDoc
 309                 //
 310                 // Aleksey:
 311                 // removed reference to an empty external DTD
 312                 //
 313                 static string C14NSpecExample1Input =
 314                         "<?xml version=\"1.0\"?>\n" +
 315                         "\n" +
 316                         "<?xml-stylesheet   href=\"doc.xsl\"\n" +
 317                         "   type=\"text/xsl\"   ?>\n" +
 318                         "\n" +
 319                         // "<!DOCTYPE doc SYSTEM \"doc.dtd\">\n" +
 320                         "\n" +
 321                         "<doc>Hello, world!<!-- Comment 1 --></doc>\n" +
 322                         "\n" +
 323                         "<?pi-without-data     ?>\n\n" +
 324                         "<!-- Comment 2 -->\n\n" +
 325                         "<!-- Comment 3 -->\n";
 326                 static string C14NSpecExample1Output =
 327                         "<?xml-stylesheet href=\"doc.xsl\"\n" +
 328                         "   type=\"text/xsl\"   ?>\n" +
 329                         "<doc>Hello, world!</doc>\n" +
 330                         "<?pi-without-data?>";
 331
 332                 //
 333                 // Example 2 from C14N spec - Whitespace in Document Content:
 334                 // http://www.w3.org/TR/xml-c14n#Example-WhitespaceInContent
 335                 //
 336                 static string C14NSpecExample2Input =
 337                         "<doc>\n" +
 338                         "  <clean>   </clean>\n" +
 339                         "   <dirty>   A   B   </dirty>\n" +
 340                         "   <mixed>\n" +
 341                         "      A\n" +
 342                         "      <clean>   </clean>\n" +
 343                         "      B\n" +
 344                         "      <dirty>   A   B   </dirty>\n" +
 345                         "      C\n" +
 346                         "   </mixed>\n" +
 347                         "</doc>\n";
 348                 static string C14NSpecExample2Output =
 349                         "<doc>\n" +
 350                         "  <clean>   </clean>\n" +
 351                         "   <dirty>   A   B   </dirty>\n" +
 352                         "   <mixed>\n" +
 353                         "      A\n" +
 354                         "      <clean>   </clean>\n" +
 355                         "      B\n" +
 356                         "      <dirty>   A   B   </dirty>\n" +
 357                         "      C\n" +
 358                         "   </mixed>\n" +
 359                         "</doc>";
 360
 361                 //
 362                 // Example 3 from C14N spec - Start and End Tags:
 363                 // http://www.w3.org/TR/xml-c14n#Example-SETags
 364                 //
 365                 static string C14NSpecExample3Input =
 366                         "<!DOCTYPE doc [<!ATTLIST e9 attr CDATA \"default\">]>\n" +
 367                         "<doc>\n" +
 368                         "   <e1   />\n" +
 369                         "   <e2   ></e2>\n" +
 370                         "   <e3    name = \"elem3\"   id=\"elem3\"    />\n" +
 371                         "   <e4    name=\"elem4\"   id=\"elem4\"    ></e4>\n" +
 372                         "   <e5 a:attr=\"out\" b:attr=\"sorted\" attr2=\"all\" attr=\"I\'m\"\n" +
 373                         "       xmlns:b=\"http://www.ietf.org\" \n" +
 374                         "       xmlns:a=\"http://www.w3.org\"\n" +
 375                         "       xmlns=\"http://www.uvic.ca\"/>\n" +
 376                         "   <e6 xmlns=\"\" xmlns:a=\"http://www.w3.org\">\n" +
 377                         "       <e7 xmlns=\"http://www.ietf.org\">\n" +
 378                         "           <e8 xmlns=\"\" xmlns:a=\"http://www.w3.org\">\n" +
 379                         "               <e9 xmlns=\"\" xmlns:a=\"http://www.ietf.org\"/>\n" +
 380                         "           </e8>\n" +
 381                         "       </e7>\n" +
 382                         "   </e6>\n" +
 383                         "</doc>\n";
 384                 static string C14NSpecExample3Output =
 385                         "<doc>\n" +
 386                         "   <e1></e1>\n" +
 387                         "   <e2></e2>\n" +
 388                         "   <e3 id=\"elem3\" name=\"elem3\"></e3>\n" +
 389                         "   <e4 id=\"elem4\" name=\"elem4\"></e4>\n" +
 390                         "   <e5 xmlns=\"http://www.uvic.ca\" xmlns:a=\"http://www.w3.org\" xmlns:b=\"http://www.ietf.org\" attr=\"I\'m\" attr2=\"all\" b:attr=\"sorted\" a:attr=\"out\"></e5>\n" +
 391                         "   <e6 xmlns:a=\"http://www.w3.org\">\n" +
 392                         "       <e7 xmlns=\"http://www.ietf.org\">\n" +
 393                         "           <e8 xmlns=\"\">\n" +
 394                         "               <e9 xmlns:a=\"http://www.ietf.org\" attr=\"default\"></e9>\n" +
 395 //                      "               <e9 xmlns:a=\"http://www.ietf.org\"></e9>\n" +
 396                         "           </e8>\n" +
 397                         "       </e7>\n" +
 398                         "   </e6>\n" +
 399                         "</doc>";
 400
 401
 402                 //
 403                 // Example 4 from C14N spec - Character Modifications and Character References:
 404                 // http://www.w3.org/TR/xml-c14n#Example-Chars
 405                 //
 406                 // Aleksey:
 407                 // This test does not include "normId" element
 408                 // because it has an invalid ID attribute "id" which
 409                 // should be normalized by XML parser. Currently Mono
 410                 // does not support this (see comment after this example
 411                 // in the spec).
 412                 static string C14NSpecExample4Input =
 413                         "<!DOCTYPE doc [<!ATTLIST normId id ID #IMPLIED>]>\n" +
 414                         "<doc>\n" +
 415                         "   <text>First line&#x0d;&#10;Second line</text>\n" +
 416                         "   <value>&#x32;</value>\n" +
 417                         "   <compute><![CDATA[value>\"0\" && value<\"10\" ?\"valid\":\"error\"]]></compute>\n" +
 418                         "   <compute expr=\'value>\"0\" &amp;&amp; value&lt;\"10\" ?\"valid\":\"error\"\'>valid</compute>\n" +
 419                         "   <norm attr=\' &apos;   &#x20;&#13;&#xa;&#9;   &apos; \'/>\n" +
 420                         // "   <normId id=\' &apos;   &#x20;&#13;&#xa;&#9;   &apos; \'/>\n" +
 421                         "</doc>\n";
 422                 static string C14NSpecExample4Output =
 423                         "<doc>\n" +
 424                         "   <text>First line&#xD;\n" +
 425                         "Second line</text>\n" +
 426                         "   <value>2</value>\n" +
 427                         "   <compute>value&gt;\"0\" &amp;&amp; value&lt;\"10\" ?\"valid\":\"error\"</compute>\n" +
 428                         "   <compute expr=\"value>&quot;0&quot; &amp;&amp; value&lt;&quot;10&quot; ?&quot;valid&quot;:&quot;error&quot;\">valid</compute>\n" +
 429                         "   <norm attr=\" \'    &#xD;&#xA;&#x9;   \' \"></norm>\n" +
 430                         // "   <normId id=\"\' &#xD;&#xA;&#x9; \'\"></normId>\n" +
 431                         "</doc>";
 432
 433                 //
 434                 // Example 5 from C14N spec - Entity References:
 435                 // http://www.w3.org/TR/xml-c14n#Example-Entities
 436                 //
 437                 static string C14NSpecExample5Input =
 438                         "<!DOCTYPE doc [\n" +
 439                         "<!ATTLIST doc attrExtEnt ENTITY #IMPLIED>\n" +
 440                         "<!ENTITY ent1 \"Hello\">\n" +
 441                         "<!ENTITY ent2 SYSTEM \"world.txt\">\n" +
 442                         "<!ENTITY entExt SYSTEM \"earth.gif\" NDATA gif>\n" +
 443                         "<!NOTATION gif SYSTEM \"viewgif.exe\">\n" +
 444                         "]>\n" +
 445                         "<doc attrExtEnt=\"entExt\">\n" +
 446                         "   &ent1;, &ent2;!\n" +
 447                         "</doc>\n" +
 448                         "\n" +
 449                         "<!-- Let world.txt contain \"world\" (excluding the quotes) -->\n";
 450                 static string C14NSpecExample5Output =
 451                         "<doc attrExtEnt=\"entExt\">\n" +
 452                         "   Hello, world!\n" +
 453                         "</doc>";
 454
 455                 //
 456                 // Example 6 from C14N spec - UTF-8 Encoding:
 457                 // http://www.w3.org/TR/xml-c14n#Example-UTF8
 458                 //
 459                 static string C14NSpecExample6Input =
 460                         "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n" +
 461                         "<doc>&#169;</doc>\n";
 462                 static string C14NSpecExample6Output =
 463                         "<doc>\xC2\xA9</doc>";
 464
 465
 466                 //
 467                 // Example 7 from C14N spec - Document Subsets:
 468                 // http://www.w3.org/TR/xml-c14n#Example-DocSubsets
 469                 //
 470                 // Aleksey:
 471                 // Well, XPath support in Mono is far from complete....
 472                 // I was not able to simplify the xpath expression from this test
 473                 // so it runs on Mono and still makes sense for testing this feature.
 474                 // Thus this test is not included in the suite now.
 475                 static string C14NSpecExample7Input =
 476                         "<!DOCTYPE doc [\n" +
 477                         "<!ATTLIST e2 xml:space (default|preserve) \'preserve\'>\n" +
 478                         "<!ATTLIST e3 id ID #IMPLIED>\n" +
 479                         "]>\n" +
 480                         "<doc xmlns=\"http://www.ietf.org\" xmlns:w3c=\"http://www.w3.org\">\n" +
 481                         "   <e1>\n" +
 482                         "      <e2 xmlns=\"\">\n" +
 483                         "         <e3 id=\"E3\"/>\n" +
 484                         "      </e2>\n" +
 485                         "   </e1>\n" +
 486                         "</doc>\n";
 487
 488                 static string C14NSpecExample7Xpath =
 489                         "(//.|//@*|//namespace::*)\n" +
 490                         "[\n" +
 491                         "self::ietf:e1\n" +
 492                         "    or\n" +
 493                         "(parent::ietf:e1 and not(self::text() or self::e2))\n" +
 494                         "    or\n" +
 495                         "count(id(\"E3\")|ancestor-or-self::node()) = count(ancestor-or-self::node())\n" +
 496                         "]";
 497                 static string C14NSpecExample7Output =
 498                         "<e1 xmlns=\"http://www.ietf.org\" xmlns:w3c=\"http://www.w3.org\"><e3 xmlns=\"\" id=\"E3\" xml:space=\"preserve\"></e3></e1>";
 499
 500                 [Test]
 501                 public void SimpleNamespacePrefixes ()
 502                 {
 503                         string input = "<a:Action xmlns:a='urn:foo'>http://tempuri.org/IFoo/Echo</a:Action>";
 504                         string expected = @"<a:Action xmlns:a=""urn:foo"">http://tempuri.org/IFoo/Echo</a:Action>";
 505
 506                         XmlDocument doc = new XmlDocument ();
 507                         doc.LoadXml (input);
 508                         XmlDsigC14NTransform t = new XmlDsigC14NTransform ();
 509                         t.LoadInput (doc);
 510                         Stream s = t.GetOutput () as Stream;
 511                         AssertEquals (expected, new StreamReader (s, Encoding.UTF8).ReadToEnd ());
 512                 }
 513
 514 #if NET_2_0
 515                 [Test]
 516                 public void PrefixlessNamespaceOutput ()
 517                 {
 518                         XmlDocument doc = new XmlDocument ();
 519                         doc.AppendChild (doc.CreateElement ("foo", "urn:foo"));
 520                         doc.DocumentElement.AppendChild (doc.CreateElement ("bar", "urn:bar"));
 521                         AssertEquals ("#1", String.Empty, doc.DocumentElement.GetAttribute ("xmlns"));
 522                         XmlDsigC14NTransform t = new XmlDsigC14NTransform ();
 523                         t.LoadInput (doc);
 524                         Stream s = t.GetOutput () as Stream;
 525                         AssertEquals ("<foo xmlns=\"urn:foo\"><bar xmlns=\"urn:bar\"></bar></foo>", new StreamReader (s, Encoding.UTF8).ReadToEnd ());
 526                         AssertEquals ("#2", "urn:foo", doc.DocumentElement.GetAttribute ("xmlns"));
 527                 }
 528
 529                 [Test]
 530                 [Ignore ("find out how PropagatedNamespaces returns non-null instance on .NET")]
 531                 public void PropagatedNamespaces ()
 532                 {
 533                         XmlDocument doc = new XmlDocument ();
 534                         doc.AppendChild (doc.CreateElement ("foo", "urn:foo"));
 535                         doc.DocumentElement.AppendChild (doc.CreateElement ("bar", "urn:bar"));
 536                         AssertEquals ("#1", String.Empty, doc.DocumentElement.GetAttribute ("xmlns:f"));
 537                         XmlDsigExcC14NTransform t = new XmlDsigExcC14NTransform ();
 538                         t.LoadInput (doc);
 539                         t.PropagatedNamespaces.Add ("f", "urn:foo");
 540                         t.PropagatedNamespaces.Add ("b", "urn:bar");
 541                         Stream s = t.GetOutput () as Stream;
 542                         AssertEquals ("<f:foo xmlns:f=\"urn:foo\"><b:bar xmlns:b=\"urn:bar\"></b:bar></f:foo>", new StreamReader (s, Encoding.UTF8).ReadToEnd ());
 543                         AssertEquals ("#2", "urn:foo", doc.DocumentElement.GetAttribute ("xmlns:f"));
 544                 }
 545
 546                 [Test]
 547                 [ExpectedException (typeof (NullReferenceException))]
 548                 public void GetDigestedOutput_Null ()
 549                 {
 550                         new XmlDsigExcC14NTransform ().GetDigestedOutput (null);
 551                 }
 552 #endif
 553         }
 554 }